/**
 * Twin-aware occurrence iteration helpers (ADR-0178).
 *
 * `Indexes.byBodyHash` is last-writer-wins content dedup. Occurrence-local rules
 * and twin-sensitive `inTestFile` predicates must walk
 * `occurrencesByHash` (or these helpers) so a test twin that wins the hash slot
 * cannot mask a production twin.
 */
import type { FunctionOccurrence, Indexes } from './types.js';
/** Yield every occurrence in the catalog (all body-hash twins). */
export declare function eachOccurrence(indexes: Indexes): IterableIterator<FunctionOccurrence>;
/**
 * True when **any** twin of `bodyHash` lives in a test file.
 * Used as a seed predicate (e.g. test-reachability BFS).
 */
export declare function anyTwinInTestFile(indexes: Indexes, bodyHash: string): boolean;
/**
 * True when **every** resolvable twin of `bodyHash` lives in a test file
 * (no production twin). Used when asking whether a caller hash is purely test.
 */
export declare function everyTwinInTestFile(indexes: Indexes, bodyHash: string): boolean;
/**
 * True when at least one twin is production (not test, not generated).
 * Used for production entry-point seeding over a body hash.
 */
export declare function hasProductionTwin(indexes: Indexes, bodyHash: string): boolean;
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